The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 2004
Filed:
Apr. 08, 2002
Etron Technology, Inc., Hsin-Chu, TW;
Abstract
A method to reduce clock noise in a multiple clock circuit is achieved. The method comprises, first, providing a periodic signal. Next, a first clock signal is provided having a frequency that is a constant multiple of the frequency of the periodic signal. Finally, a second clock signal is derived from the periodic signal. The second clock signal has a frequency that is a non-constant multiple of the periodic signal frequency. The non-constant multiple comprises the sum of a constant value plus a time-varying value. The spectral energy at the sum and difference frequencies of the first and second clock signals is reduced by frequency distribution spreading. A circuit is achieved comprising the above method.